Volume test (Roberts 63)

for wireframe images - "the hidden-line problem"

assumes an infinite eye point (0, 0, -inf)

2-D:Test all edges against all polygons
3-D: Test all edges against all polyhedra

Define polygons/polyhedra as the intersection of positive halfspaces of planes

time: O(n2), where n = # edges
preprocessing: none
coherence: takes advantage of edge coherence
scene footprint: total
memory footprint: a polygon and an edge
overdraw: worst possible case! Every edge is checked regardless of its location
clipping: not done
transparent objects: could be extended to do it
use: no one in their right mind uses this.